Oh,definitely team overwinter! I have a greenhouse full of tender perennials I save as stock plants.Wave Petunias I keep cut short until Feb when I'll let them grow in order to take cuttings.Angelonia,I let it grow a bit because it is not a bug magnet & it adds pretty blue flowers to the scene.Pennisetum grass,a couple varieties,which will afford as many divisions as I want.My kitty loves to chew on it.Probably 3 dozen different coleus,Geraniums,which I let bloom some ,but mostly keep for cuttings.Helichrysum(chartreuse),Bacopa,Black & Blue Salvia,Yellow & rose purslane,Mahogany Giant Hibiscus for cuttings,Begonias,Vinca vines,Gree n& Cream Plectranthus(Iboza),2 varieties Iresine(bloodleaf) ], Centaurea Colchester White,a vegetatively propagated Dusty Miller(hard to find & beautiful with blue flowers )& Fuchsia.Cannas,Dahlias,Elephant Ears in the basement.All these & I still start seeds & haunt garden centers because it is a rite of spring! But,I'm cutting down. sewNsow